Milky Way

Milky Way Galaxy showing major arms
Image from Steve Bowers
Milky Way Galaxy showing major arms

The spiral galaxy in which we live. It is about 100,000 light-years in diameter and 1,000 light-years thick along the arms - thicker towards the core. There are about 4 hundred billion stars in the Milky Way, not including brown dwarfs. Sol is about 26,000 light-years from the center of the Milky Way Galaxy, and the Terragen Sphere spans a region from 20,000 to 32,000 LY from the center.
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Development Notes
Text by M. Alan Kazlev
Initially published on 08 December 2001.